Aluminium T&E ccc?

A salvaged sample from my eclectic collection has  Aerialite Limited 250/440V TW/E cable with no other markings. Looks like PVC very light grey sheath. Very bright red PVC insulation on solid aluminium cores.  Probably early 60's.


cpc is 2.00 mm diameter, live is 2.50 mm diameter equating to 3.1416 mm2 and 4.9087 mm2.


Using conductor equivalence of say 1.63 for copper gives 1.93 mm2 and 3.01 mm2 respectively or in imperial 0.00299 in2 and 0.00467 in2, pretty much in imperial stranded 3/.036 and 7/.029.


Interesting that the "old" 2.5 mm2 TW/E had 1.0 mm2 cpc, a ratio of 40%, newer 2.5 mm2 TW/E has 1.5 cpc, a ratio of 60% whereas this old aluminium has a ratio of 64%. Ahead of its time?


Found this on www
Aerialite Limited

of Castle Works, Stalybridge, Cheshire.

of Romiley (wire drawing mill).

1932 Became private company.

1945 Became public company.

1947 Acquired Nettle Accessories.

1961 Manufacturers of power and lighting electric cable, "Nettle" electric wiring accessories, television aerials and associated equipment. 2,000 employees.^[1]

A March 1957 advert for Ashathene thermoplastic cables declares made to BS1557/1954.


Regards


BOD

A salvaged sample from my eclectic collection has  Aerialite Limited 250/440V TW/E cable with no other markings. Looks like PVC very light grey sheath. Very bright red PVC insulation on solid aluminium cores.  Probably early 60's.


cpc is 2.00 mm diameter, live is 2.50 mm diameter equating to 3.1416 mm2 and 4.9087 mm2.


Using conductor equivalence of say 1.63 for copper gives 1.93 mm2 and 3.01 mm2 respectively or in imperial 0.00299 in2 and 0.00467 in2, pretty much in imperial stranded 3/.036 and 7/.029.


Interesting that the "old" 2.5 mm2 TW/E had 1.0 mm2 cpc, a ratio of 40%, newer 2.5 mm2 TW/E has 1.5 cpc, a ratio of 60% whereas this old aluminium has a ratio of 64%. Ahead of its time?


Found this on www
Aerialite Limited

of Castle Works, Stalybridge, Cheshire.

of Romiley (wire drawing mill).

1932 Became private company.

1945 Became public company.

1947 Acquired Nettle Accessories.

1961 Manufacturers of power and lighting electric cable, "Nettle" electric wiring accessories, television aerials and associated equipment. 2,000 employees.^[1]

A March 1957 advert for Ashathene thermoplastic cables declares made to BS1557/1954.


Regards


BOD